OK, let's work through this together. We're starting with 274 and we're going to multiply it by 6, which means we add 274 to itself 6 times.
Step 1: 0 + 274 = 274
Step 2: 274 + 274 = 548
Step 3: 548 + 274 = 822
Step 4: 822 + 274 = 1096
Step 5: 1096 + 274 = 1370
Step 6: 1370 + 274 = 1644

So, 274*6 = 1644